Fluid pump



Patented Aug. 11, 1953 FLUID PUMP William J. Marks, Des Moines, Iowa Original application March 11, 1946, Serial No. 653,545. Divided and this application May 25, 1949, Serial No. 95,250

9 Claims.

This invention relates to fluid pumps.

The invention is more particularly concerned with a pump of the manually actuated pulsating type and its supporting structure, which supporting structure is particularly adapted for removable but rigid and pivotal connection with a panel type of mounting so as to lie adjacent one side thereof and in a position for operation by a depressible means extending to the opposite side of the mounting. Such a pump is well adapted for use in connection with windshield washers of the like, and a primary object in view, is to provide a supporting and embracing structure for the pump which will fulfill the varied requirements of mounting and servicing of the pump in such uses. The present application is a division of applicants application Ser. No. 653,545, filed March 11, 1946, and abandoned July 16, 1950.

A further object of the invention is to provide 1 a manually operable, deformable pump member having means for removable connection in a flexible fluid line and which is enclosed in a relatively rigid but adjustable housing that bodily confines and axially aligns and supports the in.- let and outlet ports of the pump during reciprocating action of an actuating plunger thereon in a direction normal to the axis of said ports for causing flow of fluid through said line from a suitable fluid source to a point of desired discharge thereof.

Further objects and advantages of the invention will become apparent in the course of the following detailed description, taken in connection with the accompanying drawing, wherein:

Fig. 1 is a vertical longitudinal section of the improved pump assembly, with certain portions thereof shown in elevation.

Fig. 2 is a vertical transverse section substantially in the plane of line 2-2 on Fig. 1.

Fig. 3 is a top elevational view of the pump assembly as it would appear detached from a supporting panel.

Referring now in detail to the drawing, the improved pump structure or assembly includes a pump body enclosing and supporting casing I0 which comprises a pair of cylindrical sections II and I2, each of substantially cup shape form and each having substantial portions of their cylindrical walls at their open ends, in telescoped mutually reenforcing relation, as indicated at I3, whereby providing inner and outer relatively rigid and strengthened sections around the center of the casing.

These casing sections II and I2 are adapted for ready assembly and disassembly and are preferably adapted to be supported with their common axes horizontally disposed as illustrated.

For this purpose, the outer casing section I2 is provided with a longitudinally disposed slot I 4 in its cylindrical Wall and which opens through the open end of the section as is clearly indicated in Fig. 1, and in full and dotted lines in Fig. 3.

An elongated externally threaded stud I5 is disposed radially of the inner section II and has its inner end suitably rigidly secured thereto, as by welding, the stud having an axial bore I5.

This tubular stud I5 is disposed adjacent the open end of section II and when the sections II and I2 are in assembled relation, the axis of the stud is disposed in a diameter of the casing substantially centrally of the opposite ends thereof, as is clearly indicated in Fig. 1.

The stud I5, in the assembled position of the casing sections, extends snugly through the slot I4 and a nut I6 is threaded onto the stud for frictionally binding the adjacent wall portion of section I2 between same and the corresponding wall portion of section II, whereby the casing sections II and I2 are releasably retained in their telescoped casing forming positions.

The pump structure assembly is adapted for removable, rigid, yet pivotal connection with a suitable support H, which may be an automobile floor board or wall panel if the pump be used with a windshield washer, or it may be any other form of support as may be dictated in accordance with the particular use to which the pump may be put.

In order to rigidly and removably attach the casing ID to a support such as is indicated at IT in Figs. 1 and 2, the stud I5 is projected through an aperture H in the support, with its end projecting thereabove, whereupon a nut I8 is threaded onto the free end of the threaded stud and into binding engagement with a washer I9, between which and the nut IS, the support is thus firmly clamped. A resilient bulb 2D is disposed within the casing I0 and same is preferably of the well known form of rubber pump bulb in general use except that the same is provided with two nipples 2I and 2 I instead of a simple nipple with which such form of bulbs are usually provided.

The bulb is preferably of a maximum diameter equal to the inner diameter of easing section II and the nipples 2|, 2| extend coaxially of the longitudinal axis of the bulb and project through openings I I and I2, in the opposite end walls of the casing sections II and I2 and such nipples terminate adjacent the outer faces of such walls.

Valve housings 22 and 22 are supported within the ends of nipples 2|, 2! and such housings are of generally tubular form. These housings are formed with external circumferential flanges 23 and 23', enlarged end portions 24 and 24 and other opposite enlarged end portions 25 and 25' the housings having bores 26 and 26 which communicate with the interior of the bulb 20.

The enlarged end portions 25 and 25, of the valve housings, provide inner cylindrical wall 21 and 21 of substantially greater diameter than the walls of bores 26 and 26 and the walls 21, 2'! merge into the walls of bores 26, 26 through frustoconical walls 28, 28' which provide valve seats.

Float valves 29 and 29 are disposed within the housings and include heads 29 engageable with the seats 28 and 28 and stems 28 guidingly supported within the bores 25 and Z6.

'Pins 39 and 30 are extended diametrically through the enlarged housing portion 25 and 25 and are engageable by the valve heads to limit movement thereof in a direction away from their seats.

The valve housings 22 and 22 are removably connected to the ends of conduits 3! and 31 which may be rubber tubes as illustrated and. the tube 3| is adapted to extend from a fluid source while the tube 3! is adapted to extend to a desired point of fluid discharge.

It is to be particularly noted that while the valve housings 22 and 22 are of like construction, :they are arranged in the same direction with the valves 25 and disposed at correspondingends or" the housings which are in the direction of fluid flow in the intended operation of the pump.

The valve housing flanges 23 and are disposed between adjacent ends of the nipples 2i and 2| and the tubes 3! and 3| as shown in Fig. 1. Fig. 1 also shows that the enlarged end portion 24 of valve housing 22 provides an anchor for the end of tube 3| while the opposite enlarged end portion 25 provides an anchor for said housing 22 within the nipple 2|. However, the recited positioning of the anchoring end is reversed in the case of the valve housing 22 which has its enlarged end 24 in nipple 2i and its enlarged valve seat-providing end 25 in the A plunger rod 32 is reciprocably disposed in the stud bore iii-with its upper end projecting above the upper end of the stud and provided with a suitable operating button 33. The lower end of the rod projects into casing section I l and is provided with a relatively large disk or plate 34 in bearing engagement with the bulb 23.

In the assembly of the structure, or on replacement of parts, the bulb 20, which may vary somewhat in size and dimensions, is positioned in the casing section [2, with the nipple 2| projected through the opening 42. The casing section II with the stud E5, rod 32, button 33 and disk 34 assembled therewith may then be telescoped within section l2, with the stud entering the slot M while projecting the other nipple '2! through the opening II. The nut I6 is then applied and thereafter the casing is secured to the support it by means of the nut 18 and washer l9.

In the operation of the improved device, fluid is pumped from tube 3i and discharged through tube 3! with the fluid flowing in the direction of the arrows in Fig. 1.

To operate the pump the rod 32 is reciprocated as by foot or hand pressure on the button 33, which pressure is of course required only for moving the rod inwardly, since the inherent resiliency of the bulb will return the rod to its outer position.

The reciprocation of the rod Will provide a pulsating movement of the wall of the bulb 20 through the engagement of the disk 35 therewith and which will effect alternating pressure differentials within the bulb thereby causing the valves 29 and 29 to alternately open and close. Thus upon consideration of Fig. 1, it will be seen that upon downward movement of the rod 32 the pressure within the bulb will be increased, causing valve 29 to close and valve 29 to open and upon upward movement of the rod, the pressure within the bulb will be momentarily reduced with the result that valve 29 will open and valve 29' will close, which is the position indicated in Fig. 1.

It will further be seen that by the simple operation of manual reciprocation of rod 32, fluid will be caused to flow from a fluid source not shown, through the tube 3!, bulb 2G and the exit tube 31.

While I have disclosed my invention in accordance with a single structural embodiment thereof, such is to be considered as illustrative only, and not restrictive, the scope of the invention being defined in the subj'oined claims.

What I claim and desire to secure by U. S. Letters Patent is:

1. In a fluid pump, a casing comprising a pair of sections having cylindrical side Walls and opposed end walls, the sections having adjacent free end portions of their cylindrical walls in readily separable telescoped relation, an externally threaded stud projecting radially from the cylindrical wall of the inner section adjacent its free end and rigidly secured thereto, an elongated slot in the cylindrical wall of the outer section and opening through the free end thereof and freely receiving the stud in the telescoped position of the sections, a nut on the stud externally of the outer section for releasably binding the telescoped walls into frictional engagement, a resilient bulb disposed within the casing having valve controlled inlet and outlet portions extending through said end walls, said stud having an axial bore aligned with an opening in the cylindrical wall of the inner section, and a manually operable plunger rod extending through said bore and opening and having a bulb engaging disk on its inner end.

2. The structure according to claim 1, together with a support for said casing, said support having opposed flat walls and an opening extending therethrough, said stud removably projecting through said openin and extending beyond said support and a second nut on the stud operative to bind the support between same and the first nut.

3. The structure according to claim 1, wherein the maximum transverse diameter of the bulb is substantially equal to the inner diameter of the cylindrical wall of said inner section, and the outer circumference of the bulb in the plane of said diameter engages said inner section wall in a line intermediate the free ends of said cylindrical walls.

4. A fluid pump, comprising a casing having opposite end walls with openings therein, a resilient bulb disposed within the casing and having axially aligned inlet and outlet conduits extending through the openings in the end walls of the casing, a tubular valve housing incorporated in each conduit and having a valve seat, the seats being disposed in the tubular valve housings and facing in the same direction axially of the bulb, a floating valve disposed in each housing for cooperation with the seat, and a plunger rod extending through the casing and having a disk on its inner end bearing on the bulb, said casing comprising a pair of sections each of generally cup-shaped form and each having their adjacent open ends in telescoped relation, adjustable means for rigidly securing said ends in telescoped relation and through which means said plunger rod extends.

5. A fluid pump comprising in combination a casing, said casing having side wall portions and oppositely disposed end walls each having an opening therein, a resilient bulb disposed within the casing and having inlet and outlet conduits extending through the openings in the respective end walls of the casing, a floating valve disposed within each conduit, both of said valves being operable to open in one axial direction of the bulb and closeable in the opposite axial direction of the bulb, and a manually operable plunger rod bearing on the bulb and extending through one of the side wall portions of the casing, said casing comprising a pair of sections each of generally cup-shaped form and having at least portions of their adjacent ends in telescoped relation, and adjustable means secured to one of said casing sections for rigidly securing said end portions in telescoped relation and through which means said plunger rod extends.

6. A fluid pump comprising in combination a two-part separable casing providing side wall portions, each casing part having an end wall with an opening therein, a resilient bulb disposed within the casing and having inlet and outlet conduits extending through the openings in the respective casing end walls, a floating valve disposed within each conduit, both of said Valves being operable to open in one axial direction of the bulb and closeable in the opposite axial direction of the bulb, and a manually operable plunger rod bearing at one of its ends on the bulb and extending transversely through one of the side wall portions of the casing, and casing supporting means comprising an outwardly projecting sleeve communicating into said casing and through which said plunger rod extends, said sleeve supported by one of said side wall portions against outward movement and being located adjacent the junction between said separable casing parts, and adjustable casing part-retaining clamp means carried by said sleeve and operable to apply pressure to both of said casing parts to prevent separation of same.

7. In a fluid pump, a casing comprising a pair of shells having closed outer ends and side walls and adjacent free ends in readily separable telescoped relation, said closed ends each having a hole therein, the free end of the outer shell having a slot therein and the free end of the inner shell having an opening therein, an externally threaded stud having its inner end anchored to at least the inner shell and extending through the slot of said outer shell, a nut on the stud externally of the outer shell for releasably binding the telescoped portions of said shells into frie tional engagement, a resilient bulb disposed within the casing, valve controlled inlet and outlet elements on each end of said bulb and extending through the closed outer end holes of the casing, said stud having an axial bore aligned with said opening in the inner shell, and a manually operable plunger rod element extending through said bore and opening for engagement with said resilient bulb.

8. In a fluid pump, a casing comprising a pair of shells having closed outer ends and side walls and adjacent free ends in readily separable telescoped relation, said closed ends each having a hole therein, said shells at their free ends having registering openings at their point of telescopic engagement, an externally threaded stud having its inner end anchored to at least the inner shell at the site of its said opening and extending through the outer shell opening, a nut on the stud externally of the outer shell for releasably binding the telescoped portions of said shells into frictional engagement, a resilient bulb, disposed within the casing, valve controlled inlet and outlet elements on each end of said bulb and extending through the closed outer end holes of the casing; said stud having an axial bore aligned with the openings in the respective shells, and a manually operable plunger rod element extending through said bore and openings for engagement with said resilient bulb.

9. In a fluid pump, a casing comprising a pair of shells having adjacent free ends in readily separable telescoped relation and having openings in their other ends, the free end of the outer shell having a slot therein extending inwardly from the free end thereof, the free end of the inner shell having an opening therein registering with said slot, an externally threaded stud having its inner end attached to the inner shell and extending through the slot of said outer shell, a nut on the stud externally of the outer shell for releasably binding the telescoped portions of said shells into frictional engagement, a resilient bulb disposed within the casing, valve controlled inlet and outlet elements on each end of said bulb and extending through the openings in the shell ends; said stud having an axial bore aligned with the opening in the inner shell, and a manually operable plunger rod element extending through said bore and said opening for engagement with the resilient bulb.

WILLIAM J. MARKS.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 224,370 Wilson Feb. 10, 1880 285,477 Garsed Sept. 25, 1888 523,345 Hardman July 24, 1894 527,248 North Oct. 9, 1894 723,042 Schwerin Mar. 17, 1903 862,867 Eggleston Aug. 6, 1907 1,568,091 Schatz Jan. 5, 1926 2,012,218 Burress Aug. 20, 1935 2,126,624 Eaddy Aug. 9, 1938 FOREIGN PATENTS Number Country Date 693,243 Germany June 13, 1940 

